60 miles per hour
distance=rate times time
first part
rate=60mph
time=3h
distance=60mph times 3h=180 miles
part 2
time=2 hours
rate=70mph
distance=70mph times 2h=140miles
total is 180mi+140mi=320miles
Step-by-step explanation:
x-intercept: where y = 0
Set y to zero to find x.
0 = ½x + 3
-3 = ½x
x = -6
(-6, 0)
The best approximation to the number of seedlings that are at least 2 inches high in the <u>entire lawn</u> is:
<h3><em>Total</em><em>
Seedlings Calculation</em><em>.</em></h3>
To identify the total number of seedling in the entire lawn, first you must add all the seedling counted by the researchers:
- Counted seedlings = 82 + 87 + 95 + 99 + 102 + 106 + 111 + 115
- <u>Counted seedlings = 697</u>
Now, you must divide 697 in the number of regions taken by the researchers ( in this case were 8), this to obtain the average:
- Average seedlings by region =
![\frac{697}{8}](https://tex.z-dn.net/?f=%5Cfrac%7B697%7D%7B8%7D)
- <u>Average seedlings by region = 87.125</u>
Now, how we know, the entire lawn has a length of 8 feet and a width of 8 feet, it means 64 regions of one feet by one feet, by this reason, we multiply the average of seedlings by the whole regions in the lawn:
- Number of seedlings in the lawn = 87.125 * 64
- <u>Number of seedlings in the lawn = 5576</u>
Taking into account the average of seedlings is 5576, the best approximates of seedlings that are at least 2 inches high in the entire lawn is <u>6400</u>.
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